Arctic Temperature Calibration or Sensor Drift

Refrigerator interior too warm, but compressor and fans seem to run normally

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Aging thermistors reading incorrectly, Control board calibration off, Sensors not properly located, User settings changed inadvertently

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before accessing sensors.

Steps:

  • Verify with thermometer: Place an accurate thermometer in both compartments to compare actual temperature with the display.
  • Adjust settings: Lower the set temperature by 1–2 steps and monitor for 24 hours.
  • Inspect sensors: Ensure thermistors are properly clipped to walls or evaporator and not dangling or buried in insulation.
  • Replace suspect sensors: If readings are consistently off by a large margin, replace the refrigerator and/or freezer thermistors.

Tip: Avoid placing warm items directly against sensors, as this can cause false readings.

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Video Guide

Repair Difficulty

Medium 3/5

Required Part

Refrigerator Thermistor
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